Chemical Engineering :: Process Equipment and Plant Design
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The distance between the centre of a rivet hole to the nearest edge of the plate is called
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Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the
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A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.
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Pick out the wrong statement.
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Pick out the wrong statement pertaining to shell and tube heat exchanger.
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Wind load consideration in the design of a support can be neglected, when the vessel is
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Souders Brown equation given by,
, is used for the calculation of the __________ in a continuous distillation column. -
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always
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Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation
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A.
If sufficient residence time (around 8 seconds) is not proivided to the downcoming liquid in the downcomer, it may entrain some vapour.
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B.
The liquid head in the downcomer should not be greater than one half the plate spacing to avoid flooding.
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C.
The dischare end of the downcomer must project far enough into the tray liquid so that no gas bubbles can enter the open end and by pass the bubble caps.
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D.
none of these.
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A.
Clearance between shell & baffles and between tube & baffles should be minimum to avoid by-passing of the fluid, but it should be enough to permit the removal of tube bundle.
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B.
Baffles are supported independently of the tubes by tie rods and positioned by spacers.
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C.
Tie rods are fixed at one end in the tube sheet by making blind holes and the minimum number of tie rods is 4 with at least 10 mm diameter.
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D.
Bracket supports are used for horizontal shell, while saddle support is used for vertical shell.
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for a Tee (used as elbow, entering run) would be around